[Sony Xperia Z Ultra] diji1:
Hey,

I'm stuck with a brick at the moment.

I (stupidly) did hold power button and volume up when I needed to restart Sony Stock Jellybean + Doomkernel and phone would not restart.

So I flashed NUT's .532 ICS, rooted and installed Dualrecovery.

First I tried flashing Stock 5.1.1 but it bootlooped - tried this a few times.

Then I tried flashing XSlim 3.2 and 2.41 the normal way with Team Win Recovery but neither would boot.

Unfortunately I tried to flash XSlim again and I got a wizard-like interface that I have never seen before by accident (I was trying to flash using Team Win Recovery again and I'm not sure how I got to this wizard)

Since the wizard appeared to be doing everything I do to flash firmware I clicked through it and rebooted - and now I'm stuck:

Phone does haptic if I hold the power button and it will go into flashmode.

When I try to flash NUT .532 using Flashtool it gives the following output and aborts:

07/011/2016 13:11:38 - INFO - Selected Bundle for Sony Xperia Z Ultra (C6833). FW release : 14.1.B.1.532. Customization : [NUT]
07/011/2016 13:11:38 - INFO - Preparing files for flashing
07/011/2016 13:11:51 - INFO - Please connect your device into flashmode.
07/011/2016 13:11:52 - INFO - Opening device for R/W
07/011/2016 13:11:52 - INFO - Reading device information
07/011/2016 13:11:52 - INFO - Phone ready for flashmode operations.
07/011/2016 13:11:52 - INFO - Opening TA partition 2
07/011/2016 13:11:52 - INFO - Current device : Unknown: Sep 6 2013/12:40:22 - EP7331C966 - Unknown: Sep 6 2013/12:40:22 - Unknown: Sep 6 2013/12:40:22 - Unknown: Sep 6 2013/12:40:22
07/011/2016 13:11:52 - INFO - Closing TA partition
07/011/2016 13:11:52 - INFO - Start Flashing
07/011/2016 13:11:52 - INFO - Processing loader.sin
07/011/2016 13:11:52 - INFO - Checking header
07/011/2016 13:11:52 - INFO - Flashing data
07/011/2016 13:11:53 - INFO - Loader : S1_Root_6732 - Version : MSM8974_23 / Boot version : S1_Boot_MSM8974_LA1.0_67 / Bootloader status : ROOTED
07/011/2016 13:11:53 - INFO - Max packet size set to 512K
07/011/2016 13:11:53 - INFO - Making a TA backup
07/011/2016 13:11:53 - INFO - Opening TA partition 1
07/011/2016 13:11:53 - INFO - Start Dumping TA partition 1
07/011/2016 13:11:53 - INFO - Finished Dumping TA partition 1
07/011/2016 13:11:54 - INFO - TA partition 1 saved to C:\Users\Grindin\.flashTool\registeredDevices\EP7331C966\s1ta\2016-02-06_01-11-53\1.ta
07/011/2016 13:11:54 - INFO - Closing TA partition
07/011/2016 13:11:54 - INFO - Opening TA partition 2
07/011/2016 13:11:54 - INFO - Start Dumping TA partition 2
07/011/2016 13:11:54 - INFO - Finished Dumping TA partition 2
07/011/2016 13:11:54 - INFO - TA partition 2 saved to C:\Users\Grindin\.flashTool\registeredDevices\EP7331C966\s1ta\2016-02-06_01-11-53\2.ta
07/011/2016 13:11:54 - INFO - Closing TA partition
07/011/2016 13:11:54 - INFO - Parsing boot delivery
07/011/2016 13:11:54 - INFO - Ending flash session
07/011/2016 13:11:54 - ERROR -
07/011/2016 13:11:54 - ERROR - Error flashing. Aborted

Can anyone please help me?

EDIT: After trying various things all involving Flashtool nothing has worked and the same error occurs in Flashtool everytime.

I did however notice that I *can* turn the device off using Power+volume UP -> 3 haptic alerts (I incorrectly stated that this didn't work) and then press the power button again to get 1 haptic alert.

The LED is functioning but only rarely - specifically it works when I hold volume DOWN and plug USB in to activate flashmode.

EDIT 2: LED has come back on - no idea what I did to cause it and it's red like it is with battery <10%. Still no screen life though. I'll wait and see if it turns orange and then I might be back in business again possibkly.

Edit 3: LED is on again, I noticed I also have this SEMC Drive thing when I plug my ZU into the computer but unfortunately the fix doesn't work for me as in the is thread:

http://xdaforums.com/xperia-z-ultra/help/wont-start-charging-led-power-vol-t3278792

Curiously the LED flashes red if I plug the phone into a few non-stock USB powerbricks I have lying around. They have previously charged the phone without any issue that I could see and I've never seen the LED flash like that before.

Edit 4: LED just turned off by itself, nothing done by me :|

Edit 5: LED is now cycling on and off very, very slowly and sometimes showing re to green like it's entering flashmode.

Edit 6: Flashtool is working as though the device is already in Flashmode without my intervention